203130028 has 24 divisors (see below), whose sum is σ = 361154304. Its totient is φ = 99955200.

The previous prime is 203129999. The next prime is 203130029. The reversal of 203130028 is 820031302.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 203129987 and 203130014.

It is not an unprimeable number, because it can be changed into a prime (203130029) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 72738 + ... + 75478.

It is an arithmetic number, because the mean of its divisors is an integer number (15048096).

Almost surely, 2^203130028 is an apocalyptic number.

It is an amenable number.

203130028 is a deficient number, since it is larger than the sum of its proper divisors (158024276).

203130028 is a wasteful number, since it uses less digits than its factorization.

203130028 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3033 (or 3031 counting only the distinct ones).

The product of its (nonzero) digits is 288, while the sum is 19.

The square root of 203130028 is about 14252.3692065565. The cubic root of 203130028 is about 587.8385221510.

The spelling of 203130028 in words is "two hundred three million, one hundred thirty thousand, twenty-eight".